@article{CRMATH_2009__347_3-4_129_0,
     author = {Salgado, Cecilia},
     title = {Rank of elliptic surfaces and base change},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {129--132},
     publisher = {Elsevier},
     volume = {347},
     number = {3-4},
     year = {2009},
     doi = {10.1016/j.crma.2008.12.003},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2008.12.003/}
}